NCERT Exercise 5.8 - Coordination Compounds
Question: In the presence of NH3, the 3d electrons pair up leaving two d orbitals empty to be involved in d 2sp 3 hybridisation forming inner orbital complex in case of [Co(NH3)6] 3+. In Ni(NH3)6 2+, Ni is in +2 oxidation state and has d 8 configuration, the hybridisation involved is sp 3d 2 forming outer orbital complex.
Answer: Work from the relevant NCERT mechanism, definition, or quantitative relation for this exercise.
Full step-by-step NCERT solution with diagrams on Something by Zero.